Az elsőben leírják a quantum teleportot, a 2-ban egy sikeres teleportot. A 3-ban a pentagon kutatásait.
A teleport jelenleg kwantumszinten megy, azaz információt lehet telepotálni. Ha 10-20 éven belül építenek olyan csodamasinát, akkor az lesz a leggyorsabb gép, hiszen 0. idő alatt, továbbít információkat, az internet szerepe is megnőhetm vezeték nálkül lehetne adatokat eljuttatni, és minden bizonnyal az egyik legbiztonságosabb módszer lenne.
Nem bizonyított tudományosan az anyag teleportációja, de hiszem, hogy 50 év múlva valósággá válhat. (Eddig majdnem mind valóra vált az, amit lehetetlennek tartottak régebben: pl repülés, aranycsinálás, robot stb.)
1.-------------------------------
Teleportation Only 20 Years Away?
Beaming Is Believing
Practical applications for teleportation, though not exactly the type seen in Star Trek, could be less than a generation away.
According to a report released Thursday by Technical Insights, the first applications of teleportation will be in quantum computers and quantum cryptography, not human transport.
Physicists can already teleport tiny things, such as a beam of light or the angular spin of atomic nuclei. But physicists caution that teleportation research is still in the early development stage.
"Right now we are just making demos of quantum teleportation, which is different than the teleportation you see in Star Trek," said Raymond Laflamme, a staff scientist at Los Alamos National Laboratory.
But within 20 years, Laflamme said teleportation could be a fundamental step in the creation of quantum computers, cryptography, and an emerging technology called "superdense coding," in which two quantum bits could be transmitted for the price of one.
"We're finally at the stage where people can hazard to guess a timeline for when these sci-fi types of things can be seen in real life," said Alex Tullo, author of the Technical Insights report.
The mysterious aspect of quantum teleportation lies in the fact that information can move from location A to location B without moving in the space between A and B. Until recently, it was deemed impossible by scientists who thought it contradicted the uncertainty principle of quantum mechanics.
Now teleportation technologies are being applied to quantum cryptography, a communications procedure so secure that any attempt at interception of an encrypted code by an eavesdropper would result in a message's immediate destruction.
Such impenetrable communications systems could have vast implications for the future of national security and international intelligence, Laflamme said. "With quantum cryptography, we can be sure that encrypted information is 100 percent secure."
There already is a prototype of a quantum computer at Los Alamos. It's capable of sending information up to a distance of 48 kilometers.
"It's amazing," said Laflamme. "Only five years ago people thought this was a crazy idea. Now we're bringing down information onto single atoms and manipulating it."
It's good news for cryptography and secure computing. But, unfortunately for Star Trek fans, few scientists see a future in beam-style transport.
"If you want to be teleported to New York for dinner," said Laflamme, "you shouldnít expect that to happen."
WASHINGTON (Reuters) - They may not be able to ask Scotty to beam them up yet, but California researchers said Thursday they had completed the first "full" teleportation experiment.
They said they had teleported a beam of light across a laboratory bench. They did not physically transport the beam itself, but transmitted its properties to another beam, creating a replica of the first beam.
"We claim this is the first bona fide teleportation," Jeff Kimble, a physics professor at the California Institute of Technology, said in a telephone interview.
Kimble thinks the experiment can eventually transform everyday life.
Scientists hope that quantum computers, which move information about in this way rather than by using wires and silicon chips, will be infinitely faster and more powerful than present-day computers.
"I believe that quantum information is going to be really important for our society, not in five years or 10 years, but if we look into the 100-year time frame it's hard to imagine that advanced societies don't use quantum information," Kimble said.
"The appetite of society is so voracious for the moving and processing of information that it will be driven to exploit even the crazy realm of quantum physics."
Quantum teleportation allows information to be transmitted at the speed of light -- the fastest speed possible -- without being slowed down by wires or cables.
The experiment depends on a property known as entanglement -- what Albert Einstein once described as "spooky action at a distance."
It is a property of atomic particles that mystifies even physicists. Sometimes two particles that are a very long distance apart are nonetheless somehow twinned, with the properties of one affecting the other.
"Entanglement means if you tickle one the other one laughs," Kimble said.
In the weird world of quantum physics, where the normal ideas of what is solid or what is real do not apply, scientists can use these properties to their advantage.
What Kimble's team did was create two entangled light beams -- streams of photons. Photons, the basic unit of light, sometimes act like particles and sometimes like waves.
They used these two entangled beams to carry information about the quantum state of a third beam. The first two beams were destroyed in the process, but the third successfully transmitted its properties over a distance of about a yard, Kimble's team reported in the journal Science.
Last December a team of physicists in Innsbruck, Austria and a month later another team in Rome said they did a similar thing, with single photons. But Kimble said his team was able to verify what they had done, and also used full light beams as opposed to single photons.
"Ours is an important advance beyond that," he said.
Although the Caltech team worked with light, Kimble thinks teleportation could be applied to solid objects. For instance, the quantum state of a photon could be teleported and applied to a particle, even to an atom.
"Way beyond sex change operations and genetic engineering, the quantum state of one entity could be transported to another entity," Kimble said. "We think we know how to do that."
In other words, an object's individual atoms would not be transported, but transmitting its properties could create a perfect replica.
Could this mean the transporters of the television and movie science-fiction series Star Trek, which beam people and objects for huge distances, could one day be a reality?
"I don't think anybody knows the answer," Kimble said. "Let's don't teleport a person -- let's teleport the smallest bacterium. How much entanglement would we need to teleport such a thing?"
Would such a teleported bacterium actually be the same bacterium, or just a very good copy?
"Again, no one knows for sure," Kimble said. But his team is working on it.
3.-------------------------------
Pentagon Now Developing
Teleportation - The Next
Scientific Realm
By George I. Seffers - Defense News Staff Writer
Defense News - January 24, 2000 Pg. 3
TheGuvner777@Hotmail.com
1-19-2000
WASHINGTON -- In what may be the largest quantum computer research program in the world, the Pentagon is developing the ability to teleport messages across the battlefield and around the globe.
Teleportation, simply stated, is the process of making information disappear from one place so it can reappear in another. The concept was made popular with the Star Trek TV series and the oft-imitated quote, "Beam me up, Scottie."
The concept is based on quantum physics, using photons rather than electrical energy used by current computers and telephone networks. A photon is a unit of electromagnetic energy that has the properties of both a particle and a wave. Photons have no electrical charge or mass, but do carry momentum and energy.
Teleporting means information will be transferred faster than the speed of light, much more securely, and without giving away the location of either the sender or receiver.
"There's no way an eavesdropper can intercept a message. No way. It's impossible. If you look at the message, you destroy it. There's no way to view the message except by the intended recipient, so two things happen," said Henry Everitt, a physicist at the Army Research Office, Durham, N.C. "First, the eavesdropper didn't see the message; and second, the intended recipient didn't get the message, so the parties involved know there was an eavesdropper."
Although teleporting objects or people remains within the realm of science fiction, the ability to teleport information is a scientific reality.
"This has gone from nothing -- I mean no money at all in the world -- to being one of the hottest areas in physics, one of the hottest areas in science, and one of the largest programs we have here at the Army Research Office," Everitt said.
"When you spread this across the four organizations involved, we are funding the largest coordinated quantum information science program in the world. At least that was true last year. People aren't going to let us be in the lead for long," Everitt said.
The Quantum Information Science Program, coordinated by the U.S. Army's Research Office, is funded and supported by the Army, the National Security Agency, the Defense Advanced Research Projects Agency, and the office of the deputy director of defense for research and engineering at the Pentagon. It was funded for $19 million in 1999 and is expected to receive more funding in 2000, although this year's budget has not been fully ironed out.
The program involves 34 projects by researchers at 21 universities, three government laboratories and two corporate laboratories.
"The Holy Grail in all of this is to build a quantum computer that will do things a classical computer could never do," Everitt said.
Although a full-fledged quantum computer may be decades away, the teleportation device, one of the elements needed for the quantum computer to work, should be available within the next decade, Everitt said.
The exterior of a quantum communications system could look similar to modern communications devices. It could resemble a desktop computer, a hand-held computing device, or a cellular telephone. But the internal workings would be dramatically different, because it would use photons rather than conventional electronics. Bandwidth would be determined by the number of photons inside.
The two people sharing information first would have to share nearly identical twin photons -- photons created at the same time and forever entangled with one another.
Once the information was introduced onto the first photon, it would disappear and reappear on the other.
In the process, the sender will obtain a numerical key, which he must then share with the receiver so that the receiver can open the document.
"The sender actually has to tell that to the receiver, actually has to send some classical data. And he can put it in an envelope, or send a telegram, make a phone call or write it in the sky with an airplane; it doesn't matter," said Sam Braunstein, a physicist at the University of Wales, Bangor, Wales.
"Without the teleported information, the key is useless to anybody; and without the key, you can't look at or copy the photon without destroying it," Everitt said.
The sender and receiver would have to share as many photons as necessary, depending on the size of the message being sent.
"If the message was a simple one -- say 'shoot' or 'don't shoot' -- only one photon pair would be needed. If the message was a complicated one -- say a classified video -- zillions of photons would be needed," Everitt said.
Although he would not supply details, Everitt said a major contract award is expected soon, and that other business opportunities will arise as the technology moves from the laboratory to integration and demonstration.
"We're at the point now where all the basic elements have been demonstrated in some form," Everitt said.
"I don't think we have any other question marks about whether this technology can work," he added. "The big question now is more a matter of integration, pulling the pieces together. The next milestone I anticipate in the next few years is demonstrating these same phenomena in solid state systems that previously have only been demonstrated in atoms. After that, I think we have our rudimentary teleportation communication systems going."
The program already has seen several successes, including the teleportation of information in the laboratory.
"It has been demonstrated that information can be teleported over 40 kilometers using existing technology," Everitt said. "There is no limit to the distance over which information can be teleported."
The technology does have its limitations, however. Because any attempt to tamper with it, or any misstep in trying to open it, can lead to its destruction, the person sending the information will have to contact the receiver through conventional communications to inform him that the message been sent and to provide the proper code for opening it.
In addition, photons can be created only in pairs, meaning a message can be teleported to only one person at a time.
"All quantum teleportation occurs between a single sender and a single receiver. Of course, the receiver of the message could re-teleport it to another party, but each time a new pair of entangled photons must be shared and used. Therefore, any quantum network would have to be established link by link," Everitt said.
Örömmel fedeztem fel ezt a régi topic-ot, mostanában éppen egy kis regényen dolgozom, a címe teleportálási tanácsadó, talán érdekes lehet a számotokra.
Van neki topic-ja is itt ebben zajlik, ahogyismondjam, ősbemutató, itt meg van egy link a html verzióhoz, jelen pillanatbna a 7. rész van kész, de gőzerővel dolgozom majd a többi részen, ha kapok egy kis bíztatást. ;-)))
Üdv Munchausen
FreeC
A Tigris!Tigris! nagyon nagyon jó könyv, és az volt benne az igazán kellemes, hogy az emberi evolúció részeként alakul ki a jaunt képessége (azt hiszem így hívják a könyvben) nem pedig valami technológiai fejlesztés eredményeképp
Nem tudom olvasta-e valaki azt a Stephen King novellát ami szintén erről szól,távoli világokra utaznak így az emberek (ha jól emlékszem tisztelegve a Tigris! Tigris! előtt ott is jauntnak hívja az író az eseményt...na szóval, teleport és tudat: a novellában el kell altatni az embereket, mert az a néhány ember aki öntudatosan ment át a folyamaton menthetetlenül megőrül
lehet hogy tényleg kizizegne valami az emberben ha szét és összeraknák megint, hogy örülnének a materialisták ha ez bebizonyosodna, hogy a tudat tényleg kötődik a struktúrához...
(offtopic ?)
egyébként én bírnám a teleportot, néha határozottan idegesít az utazással töltött idő (nem a pihenéses), hanem a kötelező
az biztos hogy jelentősen megváltozna az emberek élete...bárki bárkit elérhetne, új hadviselést kellene kitalálni, új biztonsági rendszerek...izgi...vagy halálos?
Mi van akkor, ha hibadzik valami. Itt is összeraknak, meg ott is megmaradok. Akkor melyik leszek én? Esteleg valami közbejön, s megszünök? Egyáltalán a teleportált még mindig én leszek? Hogy is van ez?
Olvasta vki Alfred Bester: The star is my destination (magyarul ferdítve: Tigris! Tigris!) című regényét?
Abban elég korrektul fest le egy jövôt, ahol a teleport általános közlekedési forma. Mindenki a saját agyával tud teleportálni.
Érdekes világkép, a hagyományos járművek luxussá válnak, hatalmas labirintusok mögé rejtik a lakásokat, ilyesmi. Rulez.
(azonkívül klasszikus sf.-regény, alapmű...)
Hmm. Erdekes dolog. Engem a kiindulasi ponton
megsemmisitenek, majd a cel helyen ujbol osz-
szeraknak egy "EN" masolatot. Az akkor en le-
szek, vagy valaki mas ? Megmarad az EN VAGYOK
erzese ???
Puff! Nem olyan nagy dolog ez, mit kell odalenni - én itten a virtuális kocsmák között állandójan portálodok és tele is vagyok mindig - szinte nincs olyan Sörhely, ahol ne lennék egyszerre szanaszéjjel...
Én már többször is teleportáltam.
Bizony.
A teleport alatt azt értem, hogy valahol jól benektároztam, és egy teljesen más helyen józanodtam ki. Az utazás részletei ismeretlenek. Igazi teleportélmény! Más néven Blackout.
Ha sikerül is megoldani belátható idon belül, nem tudom kinek lenne gusztusa teleportálódni valahova máshova....
A teleportálást csak valahogy úgy tudom leképzelni, hogy egy másolatot készítenek valakirol valahol máshol... Abba viszont bizti nem mennék bele....
A CNN-en vagy hol van egy tudomanyos musor amit az X-atkas csaj vezet es abban volt rola szo, hogy fotonokat sikerult teleportalniuk, de ugy gondoljak, hogy elo szoveteket (ertsd. embert, allatot, novenyt), meg a kovetkezo egy ket evszazadban sem lehetseges majd teleportalni. (pedig jo lenne neha csak ugy hazateleportalodni vacsira es nem ezeket a szar mirelitteket kajalni alandoan :o)))
óó, reméltem a nyitásban leírja valaki
reggel volt a tv-ben, fényrészecskét sikerált nekik, fotonokat, fotont
sajnos csak félfüllel "láttam"
a jövő mögénk kerül, ciki, nem?
klónozás, teleport...mi lesz a következő?
Gwalker:
Te is megfordultál az "Az ion hajtómű (deep space ..." topicban.Klingon 98-10-09 9:02 AM-kor már nyomatta erröl a linket (illetve nem erröl, hanem az elsö ilyen kisérletröl amit most megismételtek).
